Milk cooler



Jul 7, 1931. AU 1,813,050

MILK COOLER Filed March' 28, 1928 INVENTOR. om/7641M ATTORNEYJ.

Patented July 7, 1931 Enwm HAUK, or MILWAUKEE, WISCONSIN MILK COOLERApplication filed March 28, 1928. Serial No. 265,410.

The inventionrelates to a milk cooler of simple and economicalconstruction, very efiicient in operation, and easily maintained 7 insanitary condition by reason of the absence of crevices in which germsmay find lodgment. p

The cooling element is so constructed as to f force a very effectivecirculation of water through the device, thus insuring that the whole ofthe milk passing over the cooling surfaces will be reduced to a uniformlow temperature. 7 The structure ofethe invention will now be described,and the novelty residing in the same will be pointed out in the appended7, claims. 7

In the accompanying drawings: 7 Figure 1 is a sectional view in acentralvertical plane, of va structure embodying my invention, with someunimproved parts shown in full lines.

Fig. 2 is a framentary view, enlarged, on v the horizontal sectionalline 22, Fig. 1, showing a feature of construction which will i bedescribed later.

a Fig. 3 is a view in elevation, partly broken,

, on the lines of Fig. 1,,showing the device ,When used in connectionwith a cream separator.

- In the drawings, the numeral 10 indicates a tubular standard upon theupper end of which the cooling device 11 is supported The said coolingdevice is formed from two sheets of metal, properly shaped by spinningor drawing so as to form a base member 12 anda top member 13. The basemember 12 is provided with a centrally located depending boss or bushing14, adapted tofit closely 10. The sheet from which the base 12 is formedextends outwardly from the central opening, as at 15, and is then turneddownwardly, at an angle of, about as at 16, forming substantially atruncated cone. At

about the upper end of the tubular standard.

the base of thelatter the sheet is extended radially to form a circularshoulder as at 17, and at the edge of the shoulder the sheet isdownturned to form a vertical wall 18. Again the sheet is extendedoutwardly in a horizontal position as at 19, and then upturned at 20 toform an outer circular wall, the walls 18 and 20, with the bottom 19,defining a circular channel through which the water used in cooling themilk may flow freely. i

The top piece 13 of the cooler is likewise pressed or spun from a sheetof metal, and is constructed with a circular central portion 21, and maybe slightly bowed from a horizontal plane. At the periphery of theportion 21, the sheet is downturned to form a short circular wall 22, inwhich there is preferably a slight upward convergence. The sheet is thenturned outwardly and downwardly as at 23, at an angle which is aboutparallel to the sloping surface 16 of the base so as to be concentrictherewith, but slightly separated therefrom. Near its lower edge thetapering wall 23 of the top 13 is made to approach very closely to thecorner of the circular shoulder 17, so as to provide a narrow circularpassage at that location. Passing slightly below the shoulder 17 thesheet is upturned as at 24, and extended outwardly until it meets thetop of the wall 20, and so forms an open, circular trough, in which themilk or cream passed through the device is collected after being cooled,and held until conducted away. The upper edges of the circular walls 20and 24 are seamed to make a fluid tight joint as at 25. This completesthe closure of the compartment through which the cooling water is madeto flow.

An inlet pipe 26, connected to a supply of flowing water, opens into thechannel in the base. The pressure upon the water causes the latter tofill the channel in the base 12, and to flow through the constrictedopening and fill the space between the tapering circular'wall 16 and 23,until it finds an outlet through the tubular standard' 1 0. The tem-o Vperature of the'water is thus transmitted to the wall28 and to the milkor cream flowing I the opening in the bottom of the pan 27 isdownturnedg}sogasfto form an annular ring 28,the' Walls of which aresubstantially;

parallel tothe walls 22 of the top piece 13.

It is desirable to pwas.st er-1Qw s. 22 and 28 very slightly, andthis isattained by indentations or projections 29, see..l$ig.-g2-, which may beformed on either of the circular walls. The space described is for theun'w 'e 9f permitine th m l o a a-m. w i'flowg downwardlyiandovercooling surreservoir3Q, tvlii chmay bein; the form of an ordinary "pail,has .its 7 bottom almost jienti'rely cut away for the purposes of my111- virtion. The lower end of the reservoir is adaptedfto enter 1 theopen mouth 5 oi the Pe I 'TsitheS I'd S'Qf fl be ns Prov e w t a slighttapenf IA straining cloth 31 is adapt'- ed to-be' laid over the open.mouth of the pan-"27 andijpressedf downwardly thereinto,

in the positioninglot the reservoir'30, the said clothbeing' w edgedbetween the tapering 3 "'wallsof'the p ne? andthe reservoir. In I doingthis, the straining cloth'f3l is tightly stretched acrossthe'bottom' ofthe reservoir 30 and the largeopening thereini The f eshly drawn milk ispoured into the freservo'ir 30, and it at once begins topass through thestraining cloth 31, into the botthe -27 ."The slightly rounded upper end21 of the top 13 directs the milk into the. narrow concentric space.separating the walls'i 22 and 28, and trickles down over the watercooled surface23 and into the trough at the bottom thereof; In such movement over the; surface 23 the temperature of jtro i gh in which themilkisfcollefcted, such o11tlet;-passing with tight joint 33'through Vthe walllZO ofthe ba'se Ihefoutlet 32 may have any, desired furtherconnection, which will conductthe milk to, a receiving 'can,

- or elsewhere .asmy be expedient. 1i I hafve' shownas connectedtotheout-let 32a simple conducting device 34, formed as a .bent 'pipe' whichmay be rotated about the treeend of tion or a discharging position.

'In adapting my improved cooler to use *in .cen ti'enf' it a ie m p rfor the niilkis, reauceaty-nm abstraction ofthe heat therefrom? Anoutlet "32 opens from the the' joutlet "into; either an overflowingposicooling thecreani separated from the milk,

the re ins .3 s at e, tra nin cloth 31. In Fig. 3, the numeral 34indicates a portion of aeream separator, from which aspout 35 leadsdirectly into the pan 27. In such use, the cooling operation is thatpreviously described. 7 .7

These straining cloths may be readily sterilized or replacedat littleexpense. However, the construction of my device is not such as toprevent the use of a fine meshed wire strainer in connection therewith,if desired. I

In the construction shown, the water circulates around both sides ofthe'trough, and "so'acts 'to'incre'ase the cooling operation.

Having thus described my invention, what -I claimangLdesire to-secure byLetters Patent of the United States is:

,-'?1.;A milk or cream cooler, comprising a base sectionhaving a conicalcentral portion and a lower- 'circular'channel into which water for.cooling is admitted and an; attached closed top section. having an outerconical I portion concentricwith thatfirstmentioned, with a restrictedopeningleading iron, the channe'l'to the space between thefconica'lportions, whereby the water'is made to flow over ,the whole of -thesurfacesdefining the (said I s a a .c lT li milk Qrct amjflowing 0rdlyof t e qp sectioaa wa e supp y c nn ti ifer h n l a ilan out leadigrrom the space forfthewaten passed through the'latter. a V, I, p

2. A milk or cream cooler, .cqmprising' a base section including aconical portion and a lower'circular channel abouttliesame, and

a closing top section also includinga conical portion spaced from thefirst conical portion and overgthe outerside of'Which or cream to becooled is adapted to rflow with a .circular trough at the lower-ledge ofthe top,

section forcollecting themilk; or cream,;the said trough resting inthesaidchannel, and the 'said sections together forming a} closed mp tmn r the rcula i n, of. cooli waterat thesides of'th'e' trough, with aninlet;-

and an outlet ther for,- A l qrfi a -s e 'lsr compr s a s e t onnd al'Qsills top. Sec ion wea h i forming a water circulating compartment,

with an inlet thereto. and outlet therefirom', 1 the said sections having concentrically p c d, ni r u ffa e a a w r c rcula channel .betweenand through which the wateris adapted to flow and reduce the temwardlyand outwardly of the: conical surface the id c ed, er c n..- we a m k orcream collecting trough arranged at the wersd'e' o th p j t qn n d spo ihe ai 141 11 te r hie 900 v h k 1 illion eam. 1 9 9; .t ns tufi di s a ds mpa tmsn with an n t. nti out he, I c r u at on. Qi- Wa er f herethr gand havinaithe.s n ralie laef a tran e perature of the milk or creamflowing down.

cone with a circular wall at the top thereof, a milk or cream receivingpan having a cutout bottom supported on the said circular wall, andmeans for spacing the pan from its support, whereby milk or cream cantrickle from the bottom of the pan past the circular Wall and over theexternal surface of the truncated cone.

In testimony whereof, I have signed my name at Milwaukee, this 3rd dayof March,

EDWIN HAUK.

